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  • Computer resetting semi-randomly

    - by Peter
    Hi, I'm having a problem with my desktop whereby it sometimes resets itself semi-randomly. For example, I'll switch it on, it'll boot an OS and shortly after getting to the desktop it will immediately reset with no warning. The time isn't consistent - sometimes it does it before reaching login. I'm pretty sure it's not an OS thing; have tried Ubuntu and a Windows install and both exhibit it. It also doesn't appear to be heat-related because sometimes it appears to be able to "get past" it and will then run stably even under load; if anything it seems to be worse from a cold start. My gut feeling is some kind of power issue but I'm clutching at straws a little. Any suggestions on how I could go about testing it or trying to narrow the problem down would be appreciated. The machine is four years old now so while I can replace components if needed, it's not worth enough that I'm comfortable buying new parts without being pretty confident that they'll fix the problem. Thanks in advance for any help :) Edit: Okay, the motherboard is a MSI K8N SLI; CPU is an Athlon64 X2 4200+. Has one video card, a GeForce 7800GT. 1GB RAM, not sure of brand; 3 hard drives, two SATA and one PATA. Flashed motherboard to latest BIOS some time ago. Edit the Second: I thought I'd narrowed it down to the PSU for a while, but then it recurred again. I ended up pulling everything out but CPU, RAM and motherboard and it still seems to be stuffed (if anything, it's gotten worse in the last couple of days). I assume it's one of those three components, but the machine is old enough that I don't really want to spend money replacing any of them. So thanks for everyone's suggestions; much appreciated!

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  • Single nginx configuration for multiple sub domains

    - by Peter Smit
    I have the following directory structure for my websites: /var/www/sitename/subdomain/(public|log) e.g /var/www/stackoverflow.com/careers/public/index.html Can I make a single generic nginx configuration to do this? So that every domain is mapped to the right directory? I would not like to edit my nginx configuration for every website I add. The root domain can always be mapped to the www subdomain.

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  • Self-Resetting Power Strips?

    - by Justin Scott
    We are about to deploy a number of secure kiosks into an environment where they may be prone to lightning strikes and power surges on a somewhat regular basis (southern Florida in a place where the existing electrical infrastructure is, shall we say, a bit out of date). Ideally we would use battery backups on each system, but it's not in the budget. We plan to use a standard power strip with a circuit breaker built-in to protect the computers, but management has asked if there is a power strip that can reset itself after the breaker has been tripped. I've looked around and wasn't able to find such a beast, and it seems to me that it would probably be a safety issue for such a product to exist (e.g. if something plugged into the strip is drawing a lot of current and trips the breaker, you wouldn't want that resetting itself to prevent a possible fire). Nevertheless, if anyone has experience with such a product or can point me in the direction of something that would allow the breakers to be reset automatically or remotely (we don't want to have to send someone to each kiosk every time there is a power surge) I would appreciate any tips.

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  • XP Pro freezes on welcome screen

    - by Peter B
    I have a problem that sounds much the same as http://superuser.com/questions/83101/how-to-diagnose-a-freeze-on-startup-in-windows-xp About every 2nd or 3rd boot, XP-Pro freezes on the Welcome page (the one showing the user name icons). The mouse moves the cursor OK, but clicking on an icon does nothing, and neither does any keystroke. If you press too many keys there is a beep and after that the mouse won't move the cursor anymore. The work-around is always to reboot into Safe mode and request a CHKDSK /R After this, the next boot is fine. There are no related entries in the Event log when the problem occurs. The only two entries are: "Microsoft (R) Windows (R) 5.01. 2600 Service Pack 3 Multiprocessor Free." "The Event log service was started." Update 1: Many thanks for that but I found no problems with any diagnostics I have run. But, I have managed to locate, and code round, the source of the problem - which is with whatever processing goes on behind the XP Welcome (as opposed to "classic") login screen. Unfortunately, having classic login means you don't get the useful Fast User Switching (FUS) login/switch mode. So, to retain this, my fix is: Add a Windows shutdown script (using gpedit.msc) to force "classic" mode for the first logon after next XP startup, by running: reg add "hklm\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v LogonType /t REG_DWORD /d 0 /f Add a Scheduled Task to run at User Logon that enables Welcome screen (and hence FUS) by running the same command with 1 instead of 0 after the /d flag. The task is run as a privileged user (who can run "reg add").

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  • Why does my DNS change (and break) at regular intervals?

    - by Peter Kelly
    I have a laptop running Windows 7. Up until recently, everything was fine. We have multiple devices in my house connecting to the one access point with no problems. No issues with ISP. Now my Windows 7 PC DNS settings change every minute or so. Before the problem occurs if I do an ipconfig /all I have two DNS settings (primary/secondary) and everything is fine. After a short period of time this change to a sole DNS, 10.0.0.1. Webpages no longer resolve. If I do an ipconfig /renew, this fixes the problem. I have tried uninstalling various programs I thought might be related but the problem persists. Any ideas of potential causes?

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  • What is blocking incoming packets to port 67?

    - by Peter Robertson
    I have a DSP connected to a Windows 7 laptop by Ethernet. The laptop has all firewalls disabled (I've even tried stopping the Windows firewall service and DHCP). The DSP is sending well-formed BOOTP broadcast packets every 3 seconds to port 67. Wireshark running on the laptop sees these BOOTP packets coming in. I have a program running on the laptop with a socket successfully bound to port 67. I can see this using CurrPorts.exe. Nothing else is shown as accessing port 67. The program never sees any packets coming in. If I run a program in the DSP that sends ordinary UDP packets to port 67, Wireshark sees them coming in and reports that they are corrupt BOOTP packets, but now, my program gets them. Any idea what's going on here?

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  • PC freezes after repeated clicking noises

    - by Péter Török
    I have an oldish PC (Athlon XP 2200, WinXP). Every time I switch it on, I hear a loud "click" first of all, and when it is shut down, again a click is the last sound I hear. Lately it started to behave erratically: it started to click loudly in the middle of a session. First only once in a while, then repeatedly for several seconds in a row, and finally it froze completely. We were not doing anything particular during these times, usually just browsing the web. This has already happened twice in a few week's time period. We typically use it only in the evenings, so when the freeze happened, I just decided it is time for the bed. When it was started up the next day, everything looked fine. Any hints on what could be the culprit? Could it be caused by an ageing heat fan, or dust that has accumulated inside the case? We are backing up all the data stored on it, and then will open the case to look inside, but I thought it would be good to get some background info first of all.

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  • how to login as admin in safemode?

    - by Peter
    My sister has forgotten her password to vista, however i have installed that system so should know the admin password. However I do not know how to log in as admin. i tried to press ctrl+alt+delete twice in safemode to switch to normal login mode, but its not working. I heard that admin account is by default turned off in vista, so it might not work.

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  • Any non-custom way to manage iptables with fail2ban and libvirt+kvm?

    - by Peter Hansen
    I have an Ubuntu 9.04 server running libvirt/kvm and fail2ban (for SSH attacks). Both libvirt and fail2ban integrate with iptables in different ways. Libvirt uses (I think) some XML config and during startup (?) configures forwarding to the VM subnet. Fail2ban installs a custom chain (probably at init) and periodically modifies it to ban/unban probable attackers. I also need to install my own rules to forward various ports to servers running in VMs and on other machines, and set up rudimentary security (e.g. drop all INPUT traffic except the few ports I want open), and of course I'd like the ability to add/remove rules safely without restarting. It seems to me iptables is a powerful tool that's sorely lacking some sort of standardized way of juggling all this stuff. Every project, and every sysadmin, seems to do it differently! (And I think there's lots of "cargo cult" admin going on here, with people cloning crude approaches like "use iptables-save like so".) Short of figuring out the gory details of exactly how both of these (and potentially other) tools manipulate the netfilter tables, and developing my own scripts or just manually executing iptables commands, is there any way to safely work with iptables while not breaking the functionality of these other tools? Any nascent standards or projects defined to bring sanity to this area? Even a helpful web page I missed that might cover at least these two packages together?

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  • How would I setup iMail to forward a user's mail to another service w/o leaving a copy locally?

    - by Scott Mayfield
    I have an iMail 2006 server installation in which I have a particular user that has several aliases that all point to a single user (me, for the record). I've been copying all of my mail to GMail and reading it there, but it annoys me that I have to go back weekly and log into my mail account on iMail and delete between 6 and 10 thousand copies of messages I've already received, in order to keep my mailbox from filling up (yes, I have it set with no quota, but I consider it bad form to just let the box grow indefinitely). I've got the copying setup via an inbound user rule, but I'm wondering how to accomplish a "copy and delete" rule. The manual isn't clear on what happens with multiple matching rules (will they be processed in order, or is it a first match situation?) and there isn't a means to combine multiple actions into a single rule. If I use the "forward" action, I THINK that it's going to screw up all the sender information once the mail reaches my GMail account and show it as coming from me instead of the original senders (can anyone confirm that this is accurate?) An easy answer would be to delete my user account entirely, replace it with an alias that maps to my GMail account, but then I would lose my ability to log into the system for admin duties. So that leads me to creating a second, lesser known account for admin use, but since it's a real account, sooner or later I'm going to get mail sent to it and I'll be back to the same situation of having a user account that doesn't get emptied periodically. I imagine I can set the quota to 0 MB to cause all incoming mail to my admin account to bounce, or setup an inbound rule to bounce everything, but this is starting to sound kludgy to me. Does anyone know of a more direct work around to copying a user's incoming mail to an outside server and then deleting the local copy w/o removing their account entirely? Or is this just wishful thinking?

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  • PostgreSQL 9: Does Vacuuming a table on the primary replicate on the mirror?

    - by Scott Herbert
    Running PostgreSQL 9.0.1, with streaming replication keeping one read-only mirror instance up to date. Auto-vaccuum is on on the primary, except for a few tables which are not vacuumed by the auto-vacuum daemon, in an effort to reduce business-hour IO. These tables are "materialised views". Each night at midnight, we run a vacuum across the database in order to clean up those tables that are excluded from the auto-vacuum. I'm wondering if that process replicates across to the mirror, or if I need to set up vacuum on the mirror as well?

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  • Choice and setup of version control

    - by Peter M
    I am about to set up an new laptop and in the process transition to a new version control system as part of a general cleanup. Currently I use a centralized version control system (yes it is VSS, and yes I know all the pro's and con's of that system, but as a single user system it works well for me). I have very little requirements for a new system and I am free to choose among any of the current mainstream players, but cost constraints will push me towards oss. Some of my requirements are: Runs on a single machine (ie the laptop in question) under windows I am not sharing things with other developers or workers - this is more for my own historical benefits. I want to version source code, documentation and binary files I have a large hierarchy of projects that are unrelated (see below) I have files within the hierarchy that don't need to be controlled (but could be) Some projects use Visual Studio, so some integration there could be nice. There could be some sharing of files between jobs. I generally only need a small about of branching in code files The directory hierarchy that I have at the moment is somewhat like: Root | |--Customer #1 | | | |--Job #1 | | | | | |--Data files received from Customer for Job (not controlled) | | |--Documentation files (controlled) | | |--Project information files (not controlled - but could be) | | |--Software Project Files (controlled) | | |--Scratch dir for job (not controlled) | | | |--Job #2 | | (same structure as above) | |--Customer #2 | |.. | |--Cusmtomer #n |.. Currently I have about 22 customers with differing numbers of projects underneath them. At the moment I have a single VSS repository based at the root of the directory structure. If I kept with a centralized system (ie SVN) I believe that I should keep the same approach and continue with a single repository based from the root dir. Is this a valid approach? However if I move to a distributed tool then I am unsure of how I should handle the situation. My initial guess is that I should not have a repository based on the root of my entire directory structure - but that is a guess so I really don't know how valid it is. Should I pitch a distributed approach at the Root, Customer, Job or sub-Job directory level? Also what I am not clear on with distributed tools (and perhaps with SVN as well), is if I can branch parts of a repository. For example, I can see branching source code in software projects as being useful, but branching my documentation as not being useful. So if I pitch a repository at the Job level, can I just branch the Software Project Files? Or would all files in that Job be branched? Every time I look at distributed tools I get a nagging feeling that they are not suited to my style of setup. I am uncomfortable with idea of having to manually set up something like 50 to 80 separate repositories (if I pitch at the Job level, or 20+ if at the Customer level) within my directory hierarchy. This feeling also extends to having all those repositories scattered around as well - however I do have a backup strategy that I trust, so this latter feeling is pretty well unfounded. So what advice can you all give me? Thanks in advance!

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  • Apache mod_proxy vs mod_rewrite

    - by Scott
    What is the difference between using mod_proxy and mod_rewrite? I have a requirement to send certain url patterns through the tomcat, which runs on the same host but under port 8080. I know this is something for mod_proxy, but I"m wondering why I can't just use mod_rewrite, or what the difference is? Probably has to do w/ reverse proxy, and also when in the pipeline it gets handled? Thanks.

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  • How to confirm memcache memory increase?

    - by Peter Johansson
    Alright, I have downloaded /etc/sysconfig/memcache And edited the file that contained "PORT="11211" USER="memcached" MAXCONN="1024" CACHESIZE="64" OPTIONS="" to 1000 cachesize. I uploaded the file back to the server. Now I know there is a way to check if the changes took effect, but I cant remember how. I tried "memcached-tool 127.0.0.1:11211 stats" but it didnt show me the RAM size. Any help would be appreciated.

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  • How can I be sure that the motherboard is dead and it's not another issue?

    - by Peter
    So I have and old computer with and Intel D101GGC motherboard and a pentium 4 cpu and award bios, with a long repeating beep and not passing POST. I tried: RAM checking, they are good and working on other computers Replacing the PSU with a tested one, and still having the same issue I assumed that the CPU is dead and tested 2 others they are both Celeron D processors I also tested the CPU of this computer on another one and it's working fine I also tried it without RAM and still have the same long beep I did all this after disconnecting all the other hardware like HDD and DVD drives. The only time I didn't get any beeps is after removing the CPU I don't know if the processor is needed for the beeps to work. So My questions are: is it normal to not get any beeps if we don't have a CPU installed ? am I missing something or is the motherboard dead ? and thanks in advance.

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  • Git pull with unstaged changes

    - by Peter
    Attempting a git pull when you have unstaged changes will fail, saying you can commit or stash then. I suppose a workaround is to git stash, git pull, then git stash pop. However, is there an alternative way to do this? I would like to forcefully git pull if there are unstaged changes, but only if the files being brought down do not override the modified files? AKA. if I have a repo with the files "derp1", "derp2", "derp3" and modify "derp1" locally, a git pull will bring down and overwrite everything except the "derp1" file. I assume a git stash + pull + stash pop achieves this already? And is there a better way? I suppose this could also work differently if it occurs on a submodule.

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  • Acer Aspire PC locked up and won't re-start

    - by Jim Scott
    Vista Home Premium locked up on 5/12/10 while on a website and could not get to 'control-alt-delete.' Mouse locked, too. On/off switch would not work (stayed lit) so I unplugged the power cord. When I tried to re-start the computer I could hear a fan running but it would not boot up, nothing on the monitor and no lights on the keyboard. O/S was preloaded so I do not have a boot disk.I tried pressing F1, F2 and F11 and also with monitor off but nothing worked. Computer has not been been moved or abused so all internal connections should be fine. Have updated Windows Vista Home Premium regularly and also updated Avira anti virus and anti malware programs regularly. Using Firefox and Vista Home Premium O/S. Computer is 2 years old and was purchased new from Best Buy.

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  • Can't get virtual desktops to show up on RDWeb for Server 2012 R2

    - by Scott Chamberlain
    I built a test lab using the Windows Server 2012 R2 Preview. The initial test lab has the following configuration (I have replaced our name with "OurCompanyName" because I would like it if Google searches for our name did not cause people to come to this site, please do the same in any responses) Physical hardware running Windows Server 2012 R2 Preview full GUI, acting as Hyper-V host (joined to the test domain as testVwHost.testVw.OurCompanyName.com) with the following VM's running on it VM running 2012 R2 Core acting as domain controller for the forest testVw.OurCompanyName.com (testDC.testVw.OurCompanyName.com) VM running 2012 R2 Core with nothing running on it joined to the test domain as testIIS.testVw.OurCompanyName.com A clean install of Windows 7, all that was done to it was all windows updates where loaded and sysprep /generalize /oobe /shutdown /mode:vm was run on it A clean install of Windows 8, all that was done to it was all windows updates where loaded and sysprep /generalize /oobe /shutdown /mode:vm was run on it I then ran "Add Roles and Features" from testVwHost and chose the "Remote Desktop Services Installation", "Standard Deployment", "Virtual machine-based desktop deployment". I choose testIIS for the roles "RD Connection Broker" and "RD Web Access" and testVwHost as "RD Virtualization Host" The Install of the roles went fine, I then went to Remote Desktop Services in server manager and wet to setup Deployment Properties. I set the certificate for all 3 roles to our certificate signed by a CA for *.OurCompanyName.com. I then created a new Virtual Desktop Collection for Windows 7 and Windows 8 and both where created without issue. On the Windows 7 pool I added RemoteApp to launch WordPad, For windows 8 I did not add any RemoteApp programs. Everything now appears to be fine from a setup perspective however if I go to https://testIIS.testVw.OurCompanyName.com/RDWeb and log in as the use Administrator (or any orher user) I don't see the virtual desktops I created nor the RemoteApp publishing of WordPad. I tried adding a licensing server, using testDC as the server but that made no difference. What step did I miss in setting this up that is causing this not to show up on RDWeb? If any additional information is needed pleas let me know. I have tried every possible thing I can think of and I am just groping around in the dark now. The virtual machines running on testVwHost The configuration screen for RD Services The Windows 7 Pool The Windows 8 Pool This is logged in as testVw\Administrator

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  • How to create subdomains on webbynode/nginx?

    - by peter
    I've created a site at www.mydomain.com. I want to create a mostly unrelated site at myapp.mydomain.com. But when I follow the same steps to initialize the code on this subdomain, it takes over the code at www.mydomain.com. Both locations point to the same app, but they shouldn't. I followed the normal steps using RAPP: wn init mywebby --dns=myapp.mydomain.com wn push My stack: linux nginx RAPP Node JS 1 webby

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  • Diagnosing Microsoft SQL Server error 9001: The log for the database is not available.

    - by Scott Mitchell
    Over the weekend a website I run stopped functioning, recording the following error in the Event Viewer each time a request is made to the website: Event ID: 9001 The log for database 'database name' is not available. Check the event log for related error messages. Resolve any errors and restart the database. The website is hosted on a dedicated server, so I am able to RDP into the server and poke around. The LDF file for the database exists in the C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA folder, but attempting to do any work with the database from Management Studio results in a dialog box reporting the same error - 9001: The log for database is not available... This is the first time I've received this error, and I've been hosting this site (and others) on this dedicated web server for over two years now. It is my understanding that this error indicates a corrupt log file. I was able to get the website back online by Detaching the database and then restoring a backup from a couple days ago, but my concern is that this error is indicative of a more sinister problem, namely a hard drive failure. I emailed support at the web hosting company and this was their reply: There doesn't appear to be any other indications of the cause in the Event Log, so it's possible that the log was corrupted. Currently the memory's resources is at 87%, which also may have an impact but is unlikely. Can the log just "become corrupted?" My question: What are the next steps I should take to diagnose this problem? How can I determine if this is, indeed, a hardware problem? And if it is, are there any options beyond replacing the disk? Thanks

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